Improvement in casing t s for oil-wells



Ctcitcd gime @me erin.

JULIUS C.' DIGKEY, 0F TITUSVILLE, PENNSYLVANIA.

The Schedule referre to in these Letters Patent and making part of the same..

l, JULIUS (l. DICKEY, of Titusville, in the county of Uran-'ibid and State ot'Pennsylvauia, have invented certain Improvements in Casing Ts for Oil-Wells, of which the following is a speciiioatioit.

The object of this invention iste avoid the necesstty ot' packing,r the joints between the T and the cap and It consists in such construct-ion of the parts'a's will produce the effect desired, thereby lessening the cost of' construction, making the connection more convenient, and air or gas-tight. i f

Figure' 1 is a vertical sectionof vthe T and cap.

-Figure 2 is a transverse section oi the T on line Au, b.

Figure .3 is a broken section vof the T and cap, showing the reverse construction ofjoints seen in tig. 1. l v

s A is the T-connection, which may be made oiany suitable metal, cast or wrought, and having the internal opening A.

` B is, the cap, also made of any suitable metal, cast or wrought, and having-aperture Bf, with a screwthread cut therein. Y

Cap B is made to fit upon the upper edge of' T, A, by forming it in Va convex form where it comes in` contact with the top edgeof the T, which has a concave seat, C; or the seat C may be convex and the part that tits to it on the cap concave, as `seen in g. 3.

'lhis construction of parts of the cap and T. that come vin contact with cach other, ,when tted to the saine circle, will allow of the pipes connected to either the upper or lower side of the cap B to deviate i'rom a perpendicular with relation to the T without opening the joint at C, between the cap and T, and the joint will remain air and gas-tight, although the pipes may not be exactly on an axial line through the T.

As the Ts are usually constructed it is necessary to pack the joint between thc cap and T, which vis very dilicult to properly effect, as it will have to be done while the tubing is'suspended in the well by means .ofthe supporting cable, and is always attended with' sonic risk and much inconvenience; and, in lowering the tubing into a well with the Ts now in general use, the thimbles are liable, and do often, catch at every joint, thereby endangering the'sueeess lof the operation, always requiring constant attention and watcbfulness on the part oi' the attendants,*alli of which is obviated by constructing the parts of the cap and T, where they join andare in contact, on circular instead o t' straight lines.

Sometimes the T is constructed on its top end to .have a circular frecess, in which is inserted an' iron or steel Vring with its top edge either concave or con-Vex to lit into the concave or onto the convex surface ot' the cap.

The tubing to be suspended in the well is screwed into the lower side of the cap B, and the tubing connectingwith the tank is screwed into the top of the cap B.

The T A is screwed fast upon the casing H by the screw-thread H. I

-The female-screws D and E receive gas-pipes to conduct gas to the fire-box of the engine, or for any other purpose desired. s

Having thus described iny invention,

XVhat l claim, and desire to secure by Letters Patent, is-' v The casing T for oil-wells, when the parts A and B are consti-noted and joined together in the manner and for the purpose described.

' JULIUS C. DIOKEY.

Witnesses:

M. C. BENEDICT, H. H. CURTIss. 

